drm: Clean up colorop objects during mode_config cleanup

drm: Clean up colorop objects during mode_config cleanup

Tear down all registered drm_colorop objects during
drm_mode_config_cleanup() by invoking their destroy callbacks.

This ensures proper cleanup of color pipeline objects during DRM device
removal.

Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260202094202.2871478-7-chaitanya.kumar.borah@intel.com